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| version 1.144, 2019/09/06 10:17:07 | version 1.151, 2021/11/04 21:31:15 |
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| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: @b hash parser class. | Parser: @b hash parser class. |
| Copyright (c) 2001-2017 Art. Lebedev Studio (http://www.artlebedev.com) | Copyright (c) 2001-2020 Art. Lebedev Studio (http://www.artlebedev.com) |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) |
| */ | */ |
| Line 37 DECLARE_CLASS_VAR(hash, new MHash); | Line 37 DECLARE_CLASS_VAR(hash, new MHash); |
| #ifndef DOXYGEN | #ifndef DOXYGEN |
| class Hash_sql_event_handlers: public SQL_Driver_query_event_handlers { | class Hash_sql_event_handlers: public SQL_Driver_query_event_handlers { |
| const String& statement_string; const char* statement_cstr; | |
| bool distinct; | bool distinct; |
| HashStringValue& rows_hash; | HashStringValue& rows_hash; |
| Value* row_value; | Value* row_value; |
| Line 50 class Hash_sql_event_handlers: public SQ | Line 49 class Hash_sql_event_handlers: public SQ |
| public: | public: |
| Table* empty; | Table* empty; |
| public: | public: |
| Hash_sql_event_handlers( | Hash_sql_event_handlers(bool adistinct, HashStringValue& arows_hash, Table2hash_value_type avalue_type): |
| const String& astatement_string, | |
| const char* astatement_cstr, | |
| bool adistinct, | |
| HashStringValue& arows_hash, | |
| Table2hash_value_type avalue_type) | |
| : | |
| statement_string(astatement_string), | |
| statement_cstr(astatement_cstr), | |
| distinct(adistinct), | distinct(adistinct), |
| rows_hash(arows_hash), | rows_hash(arows_hash), |
| row_value(0), | row_value(0), |
| Line 81 public: | Line 72 public: |
| bool before_rows(SQL_Error& error) { | bool before_rows(SQL_Error& error) { |
| if(columns.count()<1) { | if(columns.count()<1) { |
| error=SQL_Error(PARSER_RUNTIME, "no columns"); | error=SQL_Error("no columns"); |
| return true; | return true; |
| } | } |
| switch(value_type){ | switch(value_type){ |
| case C_STRING: { | case C_STRING: { |
| if(columns.count()>2){ | if(columns.count()>2){ |
| error=SQL_Error(PARSER_RUNTIME, "only 2 columns allowed for $.type[string]."); | error=SQL_Error("only 2 columns allowed for $.type[string]."); |
| return true; | return true; |
| } | } |
| } | } |
| Line 110 public: | Line 101 public: |
| bool add_row_cell(SQL_Error& error, const char *str, size_t ) { | bool add_row_cell(SQL_Error& error, const char *str, size_t ) { |
| try { | try { |
| const String& cell=str?*new String(str, String::L_TAINTED /* no length as 0x00 can be inside */):String::Empty; | const String& cell=str ? *new String(str, String::L_TAINTED /* no length as 0x00 can be inside */) : String::Empty; |
| bool duplicate=false; | bool duplicate=false; |
| if(one_bool_column) { | if(one_bool_column) { |
| Line 173 public: | Line 164 public: |
| } | } |
| if(duplicate & !distinct) { | if(duplicate & !distinct) { |
| error=SQL_Error(PARSER_RUNTIME, "duplicate key"); | error=SQL_Error("duplicate key"); |
| return true; | return true; |
| } | } |
| Line 332 static void _sql(Request& r, MethodParam | Line 323 static void _sql(Request& r, MethodParam |
| const char* statement_cstr=statement_string.untaint_cstr(String::L_SQL, r.connection()); | const char* statement_cstr=statement_string.untaint_cstr(String::L_SQL, r.connection()); |
| HashStringValue& hash=GET_SELF(r, VHashBase).hash(); | HashStringValue& hash=GET_SELF(r, VHashBase).hash(); |
| hash.clear(); | hash.clear(); |
| Hash_sql_event_handlers handlers( | Hash_sql_event_handlers handlers(distinct, hash, value_type); |
| statement_string, statement_cstr, | |
| distinct, | r.connection()->query(statement_cstr, placeholders_count, placeholders, offset, limit, handlers, statement_string); |
| hash, | |
| value_type); | |
| r.connection()->query( | |
| statement_cstr, | |
| placeholders_count, placeholders, | |
| offset, limit, | |
| handlers, | |
| statement_string); | |
| if(bind) | if(bind) |
| unmarshal_bind_updates(*bind, placeholders_count, placeholders); | unmarshal_bind_updates(*bind, placeholders_count, placeholders); |
| Line 637 static void _at(Request& r, MethodParams | Line 619 static void _at(Request& r, MethodParams |
| } | } |
| } | } |
| extern String table_reverse_name; | |
| static void _select(Request& r, MethodParams& params) { | |
| const String* key_var_name=¶ms.as_string(0, "key-var name must be string"); | |
| const String* value_var_name=¶ms.as_string(1, "value-var name must be string"); | |
| Value& vcondition=params.as_expression(2, "condition must be number, bool or expression"); | |
| if(key_var_name->is_empty()) key_var_name=0; | |
| if(value_var_name->is_empty()) value_var_name=0; | |
| HashStringValue& source_hash=GET_SELF(r, VHashBase).hash(); | |
| Value& caller=*r.get_method_frame()->caller(); | |
| int limit=source_hash.count(); | |
| bool reverse=false; | |
| bool copy_default=false; | |
| if(params.count()>3) | |
| if(HashStringValue* options=params.as_hash(3)) { | |
| int valid_options=0; | |
| if(Value* vlimit=options->get(sql_limit_name)) { | |
| valid_options++; | |
| limit=r.process(*vlimit).as_int(); | |
| } | |
| if(Value* vreverse=options->get(table_reverse_name)) { | |
| valid_options++; | |
| reverse=r.process(*vreverse).as_bool(); | |
| } | |
| if(Value* vcopy_default=options->get(sql_default_name)) { | |
| valid_options++; | |
| copy_default=r.process(*vcopy_default).as_bool(); | |
| } | |
| if(valid_options!=options->count()) | |
| throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION); | |
| } | |
| HashStringValue& result_hash=*new HashStringValue(); | |
| if(limit>0){ | |
| #ifdef HASH_ORDER | |
| if(reverse){ | |
| for(HashStringValue::ReverseIterator i(source_hash); i; i.prev()){ | |
| if(key_var_name) | |
| r.put_element(caller, *key_var_name, new VString(*new String(i.key(), String::L_TAINTED))); | |
| if(value_var_name) | |
| r.put_element(caller, *value_var_name, i.value()); | |
| if(r.process(vcondition).as_bool()){ | |
| result_hash.put(i.key(), i.value()); | |
| if(!--limit) | |
| break; | |
| } | |
| } | |
| } else { | |
| #else | |
| { | |
| #endif | |
| for(HashStringValue::Iterator i(source_hash); i; i.next() ){ | |
| if(key_var_name) | |
| r.put_element(caller, *key_var_name, new VString(*new String(i.key(), String::L_TAINTED))); | |
| if(value_var_name) | |
| r.put_element(caller, *value_var_name, i.value()); | |
| if(r.process(vcondition).as_bool()){ | |
| result_hash.put(i.key(), i.value()); | |
| if(!--limit) | |
| break; | |
| } | |
| } | |
| } | |
| } | |
| VHash *result=new VHash(result_hash); | |
| if(copy_default){ | |
| result->set_default(GET_SELF(r, VHashBase).get_default()); | |
| } | |
| r.write(*result); | |
| } | |
| static void _reverse(Request& r, MethodParams& params) { | |
| VHashBase& self=GET_SELF(r, VHashBase); | |
| HashStringValue& source_hash=self.hash(); | |
| HashStringValue& result_hash=*new HashStringValue(); | |
| #ifdef HASH_ORDER | |
| for(HashStringValue::ReverseIterator i(source_hash); i; i.prev()) | |
| result_hash.put(i.key(), i.value()); | |
| #else | |
| for(HashStringValue::Iterator i(source_hash); i; i.next() ) | |
| result_hash.put(i.key(), i.value()); | |
| #endif | |
| VHashBase& result=*new VHash(result_hash); | |
| if(Value* vdefault=self.get_default()) | |
| result.set_default(vdefault); | |
| r.write(result); | |
| } | |
| static void _rename(Request& r, MethodParams& params) { | |
| HashStringValue& hash=GET_SELF(r, VHashBase).hash(); | |
| if(params.count()>1){ | |
| const String& key_from=params.as_string(0, "from key must be string"); | |
| const String& key_to=params.as_string(1, "to key must be string"); | |
| hash.rename(key_from, key_to); | |
| } else { | |
| HashStringValue* names=params.as_hash(0); | |
| for(HashStringValue::Iterator i(*names); i; i.next()) | |
| hash.rename(i.key(), i.value()->as_string()); | |
| } | |
| } | |
| // constructor | // constructor |
| MHash::MHash(): Methoded("hash") | MHash::MHash(): Methoded("hash") |
| Line 676 MHash::MHash(): Methoded("hash") | Line 776 MHash::MHash(): Methoded("hash") |
| // ^hash.sort[key;value]{string-key-maker}[[asc|desc]] | // ^hash.sort[key;value]{string-key-maker}[[asc|desc]] |
| // ^hash.sort[key;value](numeric-key-maker)[[asc|desc]] | // ^hash.sort[key;value](numeric-key-maker)[[asc|desc]] |
| add_native_method("sort", Method::CT_DYNAMIC, _sort, 2+1, 2+1+1); | add_native_method("sort", Method::CT_DYNAMIC, _sort, 3, 4); |
| // ^hash.select[key;value](bool-condition)[options hash] | |
| add_native_method("select", Method::CT_DYNAMIC, _select, 3, 4); | |
| // ^hash.reverse[] | |
| add_native_method("reverse", Method::CT_DYNAMIC, _reverse, 0, 0); | |
| // ^hash._at[first|last[;'key'|'value'|'hash']] | // ^hash._at[first|last[;'key'|'value'|'hash']] |
| // ^hash._at([-+]offset)[['key'|'value'|'hash']] | // ^hash._at([-+]offset)[['key'|'value'|'hash']] |
| add_native_method("_at", Method::CT_DYNAMIC, _at, 1, 2); | add_native_method("_at", Method::CT_DYNAMIC, _at, 1, 2); |
| // ^hash.rename[from;to] | |
| // ^hash.rename[ $.from[to] ... ] | |
| add_native_method("rename", Method::CT_DYNAMIC, _rename, 1, 2); | |
| #ifdef FEATURE_GET_ELEMENT4CALL | #ifdef FEATURE_GET_ELEMENT4CALL |
| // aliases without "_" | // aliases without "_" |
| add_native_method("keys", Method::CT_DYNAMIC, _keys, 0, 1); | add_native_method("keys", Method::CT_DYNAMIC, _keys, 0, 1); |